Erucic
acid 【化学】芥(子)酸
🗣️ 情景例句
Oh, put your heavy jacket on, Robbie.
把你的厚夹克穿上 ，Robbie。
I do feel mad about making that stupid mistake.
我犯了那个愚蠢的错误确实懊恼不已。
and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.
我们只要看一看蝙蝠回声定位这一极不寻常的发现，就可以探究一下声音在什么情况下有绝对的实用价值。